Hi Fiona, very sorry for your loss. Personally I wouldn’t go near a Jaguar dealer.
A few things to consider,
tyres, 4 years in one spot equals flat spots - may need four new ones.
fuel, whatever was in the tank will probably have gone off and will need flushing and a new filter.
battery, dead as a dodo - will need a new one.
Look for a recommended Jaguar Specialist in your area and you won’t get ripped off.